Shipman, J. T., Todd, A. W., & Wilson, J. D. (2000). An introduction to physical science. Boston: Houghton Mifflin.
Dyfyniad Arddull ChicagoShipman, James T., Aaron W. Todd, và Jerry D. Wilson. An Introduction to Physical Science. Boston: Houghton Mifflin, 2000.
Dyfyniad MLAShipman, James T., Aaron W. Todd, và Jerry D. Wilson. An Introduction to Physical Science. Boston: Houghton Mifflin, 2000.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.